// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


// Adapted from Apache Arrow.

#pragma once

#include <cstdint>

#include "hasher.h"

namespace kumo::pollux::parquet {
    class XxHasher : public Hasher {
    public:
        uint64_t hash(int32_t value) const override;

        uint64_t hash(int64_t value) const override;

        uint64_t hash(float value) const override;

        uint64_t hash(double value) const override;

        uint64_t hash(const ByteArray *value) const override;

        void hashes(const int32_t *values, int numValues, uint64_t *hashes)
        const override;

        void hashes(const int64_t *values, int numValues, uint64_t *hashes)
        const override;

        void hashes(const float *values, int numValues, uint64_t *hashes)
        const override;

        void hashes(const double *values, int numValues, uint64_t *hashes)
        const override;

        virtual void hashes(const ByteArray *values, int numValues, uint64_t *hashes)
        const override;

        static constexpr int kParquetBloomXxHashSeed = 0;
    };
} // namespace kumo::pollux::parquet
